Hair-dyeing composition for minimizing hair damage and scalp irritation caused by applying ammonia and method of producing the same

ABSTRACT

A hair-dyeing composition that minimizes hair damage and scalp irritation caused by applying ammonia to the scalp and that reduces the ammonia odor peculiar to hair-dyeing compositions is provided. The hair-dyeing composition additionally supplements the hair with amino acids similar to hair proteins to decrease hair damage, especially hair roughness and hair shortening, for healthy dyeing. A method of producing the hair-dyeing composition is additionally provided and includes melting, mixing, and emulsifying steps.

BACKGROUND OF THE INVENTION

Field of the Invention

The present invention relates to a hair-dyeing composition with aneffect of minimizing hair damage and scalp irritation caused by ammoniaprescription and ammonia odor and a method of producing the same. Inparticular, it relates to a hair-dyeing composition with an effect ofminimizing hair damage and scalp irritation caused by ammoniaprescription and ammonia odor, which is capable of decreasing ammoniaodor peculiar to a hair-dyeing composition and also of supplementing thehair with amino acids similar to hair proteins to decrease hair damage,especially hair roughness and hair shortening, for healthy dyeing and amethod of producing the same.

Description of the Related Art

Generally, oxidized permanent hair dyeing compositions can be used forcovering a gray hair, styling a gray hair, and styling a hair. Most ofthem consist of a first agent and a second agent and they are mixed eachother immediately before use. The first agent includes a diamine-basedoxidation dyeing, an ammonia water, a monoethanolamine, an ammoniumthioglycolate etc. and the second agent includes a hydrogen peroxide andthe like.

The components are essential ingredients of the hair dyeing compositionand are also causative materials of causing a hair damage (hair loss,hair cutting, hair cracking), a stimulation of the scalp (erythema,swelling, itching, stinging, rash and the like), and a specific smell.

For example, the ammonia water, which is used as an alkaline agent,serves to swell and softens the hair, so that the oxidation dye can beeasily penetrated into the hair and become solid, thereby increasing thedurability of the hair dyeing. However, due to toxicity and strongvolatility thereof, it is also a substance capable of causing astimulation of respiratory organs and seborrheic dermatitis.

In order to decrease these various side effects, if the content of thealkaline agent, especially the ammonia water is decreased, the hairdying strength, which is a basic characteristic of the hair dyeingcomposition, is lowered.

Korean Patent Laid-Open Publication No. 2001-0075811 discloses “aneutral hair dyeing agent composition” and a hair dyeing compositioncapable of dyeing at a neutral pH by containing sodium silicate, whichminimizes a damage of hair and preserves the dyed colors for a long timeduring dyeing hair by using the neutral hair dyeing agent. To this end,the neutral hair dyeing agent composition contains 0.05 to 5.0% byweight of sodium silicate based on the total weight of the compositionand is hair-dyed at a neutral (pH 6.5 to 7.0).

Korean Patent Laid-Open Publication No. 2006-0129874 discloses “a hennaand aloe-containing composition for dyeing and bleaching hair” andcompositions capable of additionally containing the henna and the aloein the conventional synthetic hair dyeing or bleaching agents. Also, itis disclosed that the scalp damage and the irritating smell productioncan be remarkably reduced and the heat generation is suppressed, therebyproviding comfortability to the person to be treated.

Korean Patent Laid-Open Publication No. 2009-0085765 discloses “acomposition of hair coloring product containing charcoal powder” havingeffects capable of remarkably reducing generation of odor adsorption andirritating odor during the dyeing process and preventing the hair frombeing damaged owing to the synergistic action of urea and isopropylmyristate by mixing the composition of hair coloring product containingcharcoal powder with the hair coloring product including a first agentand a second agent.

SUMMARY OF THE INVENTION

The present invention has been made in an effort to solve the problemsof the conceptual description of the conventional art as describedabove, and the objective of the present invention is to provide ahair-dyeing composition with an effect of minimizing hair damage andscalp irritation caused by ammonia prescription and ammonia odor, whichis capable of decreasing ammonia odor peculiar to a hair-dyeingcomposition and also of supplementing the hair with amino acids similarto hair proteins to decrease hair damage, especially hair roughness andhair shortening, for healthy dyeing and a method of producing the same.

The present invention provides a hair-dyeing composition which isparticularly capable of decreasing ammonia odor and a method ofproducing the same. It has also been found that the above problem can besolved by using menthol of an essential oil to enhance the deodorizingeffect and containing a coffee extract component, a milk extractcomponent, and an amino acid component of soybeans more in thehair-dyeing composition to alleviate irritation and damage of the hairand scalp, thereby completing the present invention.

According to an aspect of the invention to achieve the objects describedabove, there is provided a hair-dyeing composition including: a firstagent; and a second agent, wherein the first agent includes: a basematerial containing polyoxyethylene octyl ether phosphate andpolyoxyethylene oleyl ether phosphate as essential components andadditionally an auxiliary component selected from the group consistingof cetearyl alcohol, behenyl alcohol, mineral oil, and any mixture oftwo or more of these at from 5 to 30% by weight; an alkalizing agentselected from the group consisting of monoethanolamine, ammonia water(concentration: 28% by weight), and any mixture of these at from 5 to25% by weight; a color developer at from 0.01 to 2% by weight; and asolvent as the remainder, and the second agent includes: a base materialselected from the group consisting of polyoxyethylene oleyl etherphosphate, cetearyl alcohol, and any mixture of these at from 1 to 10%by weight; an oxidizing agent at from 12 to 20% by weight; a pHadjusting agent at from 0.1 to 1% by weight; and a solvent as theremainder.

Preferably, the first agent contains a deodorant at from 0.01 to 0.5% byweight.

Preferably, the deodorant is L-menthol.

Preferably, the first agent further contains a hair protecting and scalpirritation alleviating agent selected from the group consisting of acoffee extract, a milk extract, a soybean extract, and any mixture oftwo or more thereof at from 0.1 to 10% by weight based on the totalweight of the first agent.

Preferably, in the hair protecting and scalp irritation alleviatingagent, the mixing ratio of coffee extract: milk extract: soybean extractis 2:1:3 as a weight ratio.

According to an aspect of the invention to achieve the objects describedabove, there is provided a method of producing a hair-dyeing compositionincluding a first agent production step and a second agent productionstep, in which the first agent includes: a base material containingpolyoxyethylene octyl ether phosphate and polyoxyethylene oleyl etherphosphate as essential components and additionally an auxiliarycomponent selected from the group consisting of cetearyl alcohol,behenyl alcohol, mineral oil, and any mixture of two or more of these atfrom 5 to 30% by weight; an alkalizing agent selected from the groupconsisting of monoethanolamine, ammonia water (concentration: 28% byweight), and any mixture of these at from 5 to 25% by weight; a colordeveloper at from 0.01 to 2% by weight; and a solvent as the remainder,and the second agent includes: a base material selected from the groupconsisting of polyoxyethylene oleyl ether phosphate, cetearyl alcohol,and any mixture of these at from 1 to 10% by weight; an oxidizing agentat from 12 to 20% by weight; a pH adjusting agent at from 0.1 to 1% byweight; and a solvent as the remainder, wherein the first agentproduction step includes: (1) a first melting step in which a solventand a color developer are put in a tank and melted by being heated at atemperature in a range of from 70 to 90° C.; (2) a mixing step in whicha base material is melted by being heated at a temperature in a range offrom 70 to 90° C. and then put in the tank; (3) a first emulsificationstep in which the mixture obtained in the mixing step is emulsified; (4)a first cooling step in which the first product acquired in the firstemulsification step is cooled to a temperature in a range of from 50 to55° C.; (5) a second emulsification step in which an alkalizing agent isadded to the cooled first product and emulsified; and (6) a secondcooling step in which the second product acquired in the secondemulsification step is cooled to a temperature in a range of from 35 to40° C.

Preferably, the first agent production step further comprises a thirdemulsification step of further mixing a deodorant and emulsifying afterthe second emulsification step.

Preferably, in the third emulsification step, the deodorant isL-menthol.

Preferably, the first agent production step further comprises a fourthemulsification step of further mixing and emulsifying a hair protectingand scalp irritation alleviating agent after the third emulsificationstep.

Preferably, the first agent production step further includes a fifthemulsification step of further mixing an additive selected from thegroup consisting of a first additive selected from the group consistingof an antioxidant, a sequestering agent, a perfume, and any mixture oftwo or more thereof; a second additive selected from the groupconsisting of a hair softening agent, a conditioning agent, a hairpolishing agent, and any mixture of two or more thereof; a thirdadditive selected from the group consisting of a sequestering agent, aperfume, and any mixture of two or more thereof and emulsifying afterthe fourth emulsification step.

Preferably, after only ammonia water is added and emulsified in thesecond emulsification step, the alkalizing agent other than ammoniawater is added and emulsified in the third emulsification step.

Preferably, the emulsification is performed by physically stirring themixture at from 3000 to 4000 rpm for a time in a range of from 3 to 30minutes by using a homomixer.

Preferably, the emulsification is performed so that the stirring timegradually decreases as the order increases.

Preferably, the second agent production step includes: (1) a meltingstep in which a solvent, an oxidizing agent, and a pH adjusting agent ofaqueous components are put in a tank and melted by being heated at atemperature in a range of from 70 to 90° C.; (2) a mixing step in whicha base material is melted by being heated at a temperature in a range offrom 70 to 90° C. and then put in the tank; and (3) an emulsificationstep in which the mixture obtained in the mixing step is emulsified.

BRIEF DESCRIPTION OF THE DRAWINGS

The above and other objects, features and advantages of the presentinvention will be more apparent from the following detailed descriptiontaken in conjunction with the accompanying drawings, in which:

FIG. 1 is a diagram illustrating schematically a shape of sphericalmicelles;

FIG. 2 is a diagram illustrating schematically a shape of micelleshaving a layered structure;

FIG. 3 is a diagram illustrating schematically a shape of micellesobtained through an emulsification by using a polyoxyethylene alkylether phosphate-based substance according to the present invention;

FIG. 4 and FIG. 5 are photographs illustrating results of experiments onthe stability of layered micelle structure of polyoxyethylene octylether phosphate and polyoxyethylene oleyl ether phosphate among the basematerials used in the present invention;

FIG. 6 through FIG. 9 are photographs illustrating an effect ofprotecting the hair after hair-dyeing, FIG. 6 illustrating thephotograph of Comparative Example 1, FIG. 8 illustrating the photographof Example 8, FIGS. 7 and 9 illustrating the photographs of Example 11;and

FIG. 10 is a photograph illustrating a hair-dyeing effect.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

Hereinafter, preferred embodiments of the invention will be described inmore detail with reference to the accompanying drawings.

The hair-dyeing composition according to the present invention containsa first agent and a second agent, in which the first agent contains abase material selected from the group consisting of cetearyl alcohol,behenyl alcohol, polyoxyethylene octyl ether phosphate, polyoxyethyleneoleyl ether phosphate, mineral or a mixture of two of more of these atfrom 5 to 30% by weight, an alkalizing agent selected from the groupconsisting of monoethanolamine, ammonia water (concentration: 28% byweight), or any mixture of these at from 5 to 25% by weight, a colordeveloper at from 0.01 to 2% by weight, and a solvent as the remainderand the second agent contains a base material selected from the groupconsisting of polyoxyethylene oleyl ether phosphate, cetearyl alcohol,or any mixture of these at from 1 to 10% by weight, an oxidizing agentat from 12 to 20% by weight, a pH adjusting agent at from 0.1 to 1% byweight, and a solvent as the remainder.

The present inventors have studied a method of decreasing the irritatingodor, especially ammonia odor, generated when using an oxidativehair-dyeing composition and confirmed that spherical micelles orbar-shaped micelles formed in the emulsified state of a generalhair-dyeing composition cannot decrease the ammonia odor. As a result ofstudies on various emulsification methods, the present inventors haveconfirmed that the ammonia odor is decreased when ammonia water isenclosed in a micelle formed to have a layered structure, therebycompleting the present invention.

In detail, a general emulsion is in an O/W (oil-in-water) form and formsmostly a spherical or bar-shaped micelle. Hence, the micelles ofconventional hair-dyeing compositions also form the same spherical orbar-shaped micelles. Since the ammonia water contained in the waterphase of the hair-dyeing composition is present on the outside (waterphase) rather than the inside of the micelle, the ammonia watervolatilizes and causes an irritating odor to adversely affect the bodiesof the practitioner and the customer during the procedure of dyeing (seeFIG. 1).

Accordingly, it has been confirmed that the volatilization of ammoniawater is not prevented by a general emulsification method, and variousemulsification experiments have been thus conducted. As a result, it hasbeen confirmed that the volatilization is prevented by enclosing ammoniawater in a micelle formed to have a layered structure (see FIG. 2).

As a result of various experiments, it has been confirmed that apolyoxyethylene alkyl ether phosphate-based substance is suitable as asubstance which forms a stable layer structure by a generalemulsification method, and it has also been confirmed that a combinationof polyoxyethylene octyl ether phosphate and polyoxyethylene oleyl etherphosphate is suitable for the enclosure of ammonia water (see FIG. 3).

FIG. 3 illustrates a layered micelle structure emulsified using acombination of polyoxyethylene octyl ether phosphate and polyoxyethyleneoleyl ether phosphate as a polyoxyethylene alkyl phosphate, and it hasbeen confirmed that ammonia water is enclosed in between a layer andanother layer to decrease the ammonia odor.

The base material of the first agent preferably contains polyoxyethyleneoctyl ether phosphate and polyoxyethylene oleyl ether phosphate asessential components and may additionally contain an auxiliary componentselected from the group consisting of cetearyl alcohol, behenyl alcohol,mineral oil, and any mixture of two or more thereof. The mineral oil isa by-product produced in the course of refining crude oil, containsalkanes and paraffin as main components, is a relatively inexpensivesubstance and produced in a significantly large quantity, and can becommercially purchased and used by those skilled in the art.

In the first agent, the base material may be contained in an amount offrom 5 to 30% by weight based on the total weight of the first agent,but when the content is out of the above range, there may be a problemthat the odor decreasing effect is insufficient as the shape of themicelle is not properly maintained and the time dependent stability(thinning) changes.

In the first agent, the alkalizing agent may be contained in an amountof from 5 to 25% by weight based on the total weight of the first agent,but when the content is out of the above range, there may be a problemthat the hair-dyeing power is insufficient, hair damage is severe, scalpis excessively irritated, and the odor peculiar to an alkalizing agentis stronger.

The color developer in the first agent may be preferably selected fromthe group consisting of toluene-2,5-diamine sulfate,2,4-diaminophenoxyethanol hydrochloride, m-aminophenol, resorcinol, andany mixture of two or more thereof, but these are exemplary of thepresent invention, and the invention is not intended to be limitedthereto. The color developer may be contained in an amount of from 0.01to 2% by weight based on the total weight of the first agent, but whenthe content is out of the above range, there may be a problem thatproper color development is not achieved.

In the first agent, the solvent may be water.

The first agent may further contain a deodorant at from 0.01 to 0.5% byweight based on the total weight of the first agent, and the deodorantmay be L-menthol. L-menthol as a deodorant is the main component ofpeppermint oil and a white crystal obtained by distilling, cooling, andpurifying the foliage of peppermint. It provides a unique refreshingscent and refreshing feeling and has a relaxing effect and a function ofalleviating pain or itching. It is fragrant and has a cool taste, andthus it is used as stomachic and medicinal stuffs for neuralgia andtuberculosis, and oral fragrance, and the plaster thereof is used forrheumatism and neuralgia. It is represented by a chemical formula ofC₁₀H₂₀O, is an opaque crystal, and has a molecular weight of 156.27g/mol, a melting point of 42° C., and a boiling point of 212° C. By theaddition of such a deodorant, the effect of deodorizing the hair-dyeingcomposition is enhanced and especially the effect of decreasingsecondary ammonia odor has been confirmed. When the amount of L-mentholused as the deodorant is out of the above range, there may be a problemthat the function of deodorization is weak and the formulation isdestabilized (separated).

The first agent may further contain a hair protecting and scalpirritation alleviating agent selected from the group consisting of acoffee extract, a milk extract, a soybean extract, and any mixture oftwo or more thereof at from 0.1 to 10% by weight based on the totalweight of the first agent. In the hair protecting and scalp irritationalleviating agent, the mixing ratio of coffee extract:milkextract:soybean extract may be 2:1:3 as a weight ratio. It has beenconfirmed that an effect of alleviating the scalp irritation due todyeing and an effect of restoring the damaged hair are achieved by theuse of such a hair protecting and scalp irritation alleviating agent.There may be a problem that the effect of alleviating the scalpirritation and the function of restoring the damaged hair areinsufficient when the content is out of the above range and thecompatibility of the hair protecting and scalp irritation alleviatingagent with the raw material components is poor when the content isexcessive.

The coffee extract in the hair protecting and scalp irritationalleviating agent is preferably Arabica that is native to Ethiopia andgrows in Brazil, Colombia, Costa Rica, and the like. It has a productionquantity of 70% and mainly grows at a temperature of from 15 to 24° C.,a humidity of 60%, and an altitude of from 600 to 2000 m. It has a flatoval shape and a turquoise color and is characterized by a rich flavorand a sour taste. Examples of the efficacy thereof may includeantimicrobial activity, an antioxidative effect, the improvement ofinflammation, the improvement of blood circulation, skin elasticity, thepromotion of metabolism, the elimination of waste products, and a fatdecomposing effect. As the chemical components constituting Arabica,there are beta sitosterol, caffeolol, caffein, caffetanic acid,campesterol, chlorogenic acid, linoleic acid, oleic acid, palmitic acid,and stearic acid. The extract (cold brewed coffee extract) can beobtained by a cold extraction method in order to maximize the efficacyof these components. The cold extraction method can be carried out bykeeping the coffee beans immersed in water so that the active componentsin the coffee are eluted. The purification to remove impurities throughcentrifugation or filtration may be further performed. Afterpurification, concentration under reduced pressure or freeze-drying maybe further performed. The coffee extract extracted by such a coldextraction method can be acquired as an ethanol fraction through refluxextraction with ethanol. The amount of water used, the temperature forcold immersion, and the time for cold immersion in the cold extractionare not particularly limited, but the amount of water used may bepreferably in a range of from 50 to 150 g of coffee bean per 1 L ofwater. There may be a problem that the yield of coffee extract decreasesand the productivity thus decreases when the amount of coffee beans istoo small based on the amount of water used and the extractionefficiency decreases when the amount of coffee beans is too great. Thetemperature for cold immersion may be preferably in a range of from roomtemperature to 45° C. There may be a problem that the consumption ofunnecessary energy, particularly energy for cooling or heating increaseswhen the temperature is lower than room temperature or higher than 45°C. The time for cold immersion may be preferably in a range of from 1 to3 days. There may be a problem that the extraction efficiency decreaseswhen the time for cold immersion is too short and the productivitydecreases when the time for cold immersion is too long. The ethanolfraction is acquired by adding ethanol to the coffee extract acquired bycold extraction of coffee so as to obtain an aqueous ethanol solutionhaving a final concentration of from 50 to 90% (v/v) and performingreflux extraction for from 3 to 7 hours. The reflux extraction may berepeated from 1 to 5 times and preferably from 2 to 4 times. Afterreflux extraction and purification by filtration or the like,concentration under reduced pressure or freeze-drying may be furtherperformed.

Milk extract has been used as a secret of beauty from the ancient Egyptand is a source of essential amino acids that the body needs. The maincomponent of milk is protein, and casein (amino acid) accounts for 80%thereof. In terms of efficacy, it promotes collagen synthesis offibroblasts, promotes cell growth of fibroblasts and keratinocytes, andthus has a function of improving wrinkle by this. As the amino acidsconstituting the milk extract, essential amino acids such as glycine,alanine, serine, threonine, valine, leucine, phenylalanine, tyrosine,proline, methionine, cystine, cysteic acid, aspartic acid, glutamicacid, arginine, histidine, and lysine and hydrophilic amino acids arethe main components, and they exhibit favorable hair protecting andscalp irritation alleviating effect. The milk extract used in thepresent invention specifically refers to hydrolyzed milk protein, andthis is obtained by hydrolyzing casein (casein K) obtained from milkwith renin of an enzyme to isolate and purify the glycoprotein.

The main components of the soybean extract are isoflavones, saponins,and phospholipids, and isoflavones are also called phytoestrogens sincethey play a role similar to estrogen of the female hormone. It has beenreported to inhibit the enzymatic action involved in cancer cellproliferation and to be effective in the treatment of various diseasesand the skin aesthetics for postmenopausal women. Saponin is afunctional substance which lowers blood cholesterol, inhibits theformation of peroxidized lipids that are constantly produced in cells,and is known to help prevent aging and senile dementia includingatherosclerosis. Lecithin, a main component of phospholipids, is aconstituent of various biofilms such as cell membranes in livingorganisms. The main function thereof is moisturizing, antioxidant, andanti-inflammatory actions for the skin. The soybean extract used in thepresent invention refers to hydrolyzed soy protein, which is obtained bydispersing defatted soybeans in water, adjusting the pH with an alkali,adding trypsin which is one kind of proteolytic enzymes to hydrolyze theprotein, then inactivating the enzyme by a heat treatment, then cooling,filtering, and purifying the resultant, and then adjusting the pH tofrom 4.0 to 4.5 with an acid.

The hair protecting and scalp irritation alleviating effect is exhibitedwhen the hair protecting and scalp irritation alleviating agent containsthe extract selected from the group consisting of mixtures of a coffeeextract, a milk extract, and a soybean extract having a ratio of 2:1:3at from 0.1 to 10% by weight.

The base material and solvent of the second agent may be the same and/orsimilar to the base material and solvent of the first agent.

The oxidizing agent of the second agent may be hydrogen peroxide(concentration: 35% by weight). There may be a problem that thehair-dyeing power decreases when the amount of the second agent used isinsufficient and side effects such as hair damage and scalp irritationincrease when the oxidizing agent is used too much.

The pH adjusting agent of the second agent may be selected from thegroup consisting of tetrasodium pyrophosphate, phosphoric acid, and anymixture thereof. The pH adjusting agent may be added in an amountappropriate to control the pH of the composition to be acquired. It ispreferable to adjust the pH of the entire composition in a range of from2.5 to 3.5.

The first agent may further contain a first additive selected from thegroup consisting of an antioxidant, a sequestering agent, a perfume, andany mixture of two or more thereof.

The first agent may further contain a second additive selected from thegroup consisting of a hair softening agent, a conditioning agent, a hairpolishing agent, and any mixture of two or more thereof.

The second agent may further contain a third additive selected from thegroup consisting of a sequestering agent, a perfume, and any mixturethereof.

The above-mentioned first to third additives may be commerciallypurchased by those skilled in the field of hairstyling, particularly inthe hair-dyeing composition manufacturing field and contained in thecomposition in an appropriate amount to control the physical propertiesof the hair-dyeing composition and to improve the stability and the likeof the product.

In addition, the method of producing a hair-dyeing composition accordingto the present invention includes a first agent production step and asecond agent production step, in which the first agent contains a basematerial selected from the group consisting of cetearyl alcohol, behenylalcohol, polyoxyethylene octyl ether phosphate and polyoxyethylene oleylether phosphate, mineral oil, and any mixture of two or more thereof atfrom 5 to 30% by weight, an alkalizing agent selected from the groupconsisting of monoethanolamine, ammonia water (concentration: 28% byweight), and any mixture thereof at from 5 to 25% by weight, a colordeveloper at from 0.01 to 2% by weight, and a solvent as the remainderand the second agent contains a base material selected from the groupconsisting of polyoxyethylene oleyl ether phosphate, cetearyl alcohol,and any mixture thereof at from 1 to 10% by weight, an oxidizing agentat from 12 to 20% by weight, a pH adjusting agent at from 0.1 to 1% byweight, and a solvent as the remainder. Here, the first agent productionstep includes (1) a first melting step in which a solvent and a colordeveloper of aqueous components are put in a tank and melted by beingheated at a temperature in a range of from 70 to 90° C.; (2) a mixingstep in which a base material of an oily component is melted by beingheated at a temperature in a range of from 70 to 90° C. and then put inthe tank; (3) a first emulsification step in which the mixture obtainedin the mixing step is emulsified; (4) a first cooling step in which thefirst product acquired in the first emulsification step is cooled to atemperature in a range of from 50 to 55° C.; (5) a second emulsificationstep in which an alkalizing agent is added to the cooled first productand emulsified; and (6) a second cooling step in which the secondproduct acquired in the second emulsification step is cooled to atemperature in a range of from 35 to 40° C.

In the first melting step of the first agent production step, a solventand a color developer of aqueous components are put in a tank and meltedby being heated at a temperature in a range of from 70 to 90° C. Whenthe melting temperature is lower than 70° C. in the melting step, theremay be a problem that the melting is insufficient and the shape of themicelles is not uniform. When the melting temperature is higher than 90°C., the inherent structures of the raw materials are affected to cause aspecific odor and browning.

In the mixing step of the first agent production step, a base materialof an oily component is melted by being heated at a temperature in arange of from 70 to 90° C. and then put in the tank.

In the first emulsification step of the first agent production step, themixture obtained in the mixing step is emulsified. The emulsificationmay be performed by physically stirring the mixture at from 3000 to 4000rpm for a time in a range of from 3 to 30 minutes by using a homomixer.In particular, the emulsification in this step may be preferablyperformed by stirring the components in the tank at from 3000 to 4000rpm for from 20 to 30 minutes by using a homomixer. There may be aproblem that the phase of the emulsion to be acquired is ununiform andthe time course of the emulsion is affected, that is, separation orthinning of the emulsion is caused when the stirring speed in this firstemulsification step is slower than 3000 rpm and the stirring time isshorter than 20 minutes. When the stirring speed in this firstemulsification step is faster than 4000 rpm and the stirring time islonger than 30 minutes, there may be a problem that excessive bubblesare generated and the composition to be acquired changes black as theoxygen contained in the bubbles promotes the oxidation of the dye.

In the first cooling step of the first agent production step, the firstproduct acquired in the first emulsification step is cooled to atemperature in a range of from 50 to 55° C.

In the second emulsification step of the first agent production step, analkalizing agent is added to the cooled first product and emulsified.The emulsification is preferably performed by stirring and emulsifyingthe mixture at from 3000 to 4000 rpm for from 5 to 10 minutes by using ahomomixer. In the cooling step after the first emulsification, thealkalizing agent, particularly ammonia water, is added in order toenclose the alkalizing agent, particularly ammonia water, in the waterphase of the layered micelle. There may be a problem that it isdifficult to enclose the alkalizing agent, particularly ammonia water,and the low odor property is thus not improved when the stirring speedand the stirring time are out of the above ranges.

In the second cooling step of the first agent production step, thesecond product acquired in the second emulsification step is cooled to atemperature in a range of from 35 to 40° C.

The base material of the first agent preferably contains polyoxyethyleneoctyl ether phosphate and polyoxyethylene oleyl ether phosphate asessential components and may additionally contain an auxiliary componentselected from the group consisting of cetearyl alcohol, behenyl alcohol,mineral oil, and any mixture of two or more thereof.

A third emulsification step of further mixing a deodorant andemulsifying may be further included after the second emulsificationstep. The emulsification in the third emulsification step may also beperformed by adding a deodorant to the product acquired after the secondemulsification step and stirring and emulsifying the mixture at from3000 to 4000 rpm for from 5 to 10 minutes by using a homomixer. In thisstep, the deodorant is added in order to enclose the deodorant,preferably L-menthol, in the oily layer of the layered micelles. Whenthe stirring speed and the stirring time are out of the above range, itis difficult to enclose the deodorant, preferably L-menthol.

A fourth emulsification step of further mixing and emulsifying a hairprotecting and scalp irritation alleviating agent may be furtherincluded after the third emulsification step. This step is particularlypreferably carried out by physical stirring at 25° C. or higher and 3000rpm or more. There may be a problem that the components are notuniformly mixed in the phase when the emulsification is performed at atemperature lower than or equal to the above temperature and a stirringspeed slower than or equal to the above stirring speed. There may be aproblem of bubble generation and the change of inherent structure,discoloration, the change of odor, and phase change of the raw materialsdue to temperature when the temperature is higher than 30° C. and thestirring speed is faster than 4000 rpm.

A fifth emulsification step of further mixing an additive selected fromthe group consisting of a first additive, a second additive, a thirdadditive, and any mixture of two or more thereof and emulsifying may befurther included after the fourth emulsification step.

In a case in which the first agent contains ammonia water and analkalizing agent other than ammonia water as the alkalizing agent, onlyammonia water may be added and emulsified in the second emulsificationstep and the alkalizing agent other than ammonia water may be then addedand emulsified in the third emulsification step. Consequently, theaddition of deodorant may be performed by enclosing a deodorant,preferably L-menthol, in the oily layer of the layered micelles and thenenclosing an alkaline agent other than ammonia water, for examplemonoethanolamine, in the water phase. By positioning ammonia waterparticularly having a strong odor inside the micelle through suchsequential enclosure, it is possible to greatly decrease ammonia odorand to improve the low odor property of the whole hair-dyeingcomposition.

The emulsification may be performed so that the stirring time graduallydecreases as the order increases, that is, the stirring time of thefirst emulsification step is the longest, and the stirring time isshorter in the second emulsification step, and the stirring time is theshortest in the third emulsification step. This is because in order togradually enclose other components in the micelle after the micelle isonce formed.

The method of producing a hair-dyeing composition according to thepresent invention may further include a second agent production step.Here, the second agent production step includes (1) a melting step inwhich a solvent, an oxidizing agent, and a pH adjusting agent of aqueouscomponents are put in a tank and melted by being heated at a temperaturein a range of from 70 to 90° C.; (2) a mixing step in which a basematerial of an oily component is melted by being heated at a temperaturein a range of from 70 to 90° C. and then put in the tank; and (3) anemulsification step in which the mixture obtained in the mixing step isemulsified. In other words, the second agent production step includes(1) a melting step, (2) a mixing step, and (3) an emulsifying step.

In the melting step of (1), the aqueous components among the componentsconstituting the second agent which contains a base material selectedfrom the group consisting of polyoxyethylene oleyl ether phosphate,cetearyl alcohol, and any mixture thereof at from 1 to 10% by weight, anoxidizing agent at from 12 to 20% by weight, a pH adjusting agent atfrom 0.1 to 1% by weight, and a solvent as the remainder are put in amain tank and melted by being heated at a temperature in a range of from70 to 90° C. There may be a problem that the melting is insufficientwhen the melting temperature is lower than 70° C. in the melting step.When the melting temperature is higher than 90° C., the inherentstructures of the raw materials are affected to cause a specific odorand browning of the composition to be acquired.

In the mixing step of (2), separately from the melting step, the oilycomponents among the components constituting the second agent are meltedby being heated at a temperature in a range of from 70 to 90° C. andthen put in the main tank. There may be a problem that the melting isinsufficient when the melting temperature is lower than 70° C. in themelting step. when the melting temperature is higher than 90° C., theinherent structures of the raw materials are affected to cause aspecific odor and browning.

The emulsification step of (3) includes an emulsification step in whichthe components in the main tank are stirred and emulsified at from 3000to 4000 rpm for from 5 to 10 minutes by using a homomixer. There may bea problem that the phase of the emulsion to be acquired is ununiform andthe time course of the emulsion is affected, that is, separation orthinning of the emulsion is caused when the stirring speed in thisemulsification step is slower than 3000 rpm and the stirring time isshorter than 5 minutes. There may be a problem that excessive bubblesare generated and a desired viscosity is not obtained when the stirringspeed is faster than 4000 rpm and the stirring time is longer than 10minutes.

The second agent production step may further include an oxidizing agentmixing step in which the mixture emulsified in the emulsification stepof (3) is cooled to from 25 to 30° C. and an oxidizing agent is added toand mixed with the emulsified mixture after the emulsification step (3).There may be a problem that the oxidizing agent is not uniformly mixedwith the emulsified mixture when the temperature at the time of addingthe oxidizing agent is lower than the above range. There may be aproblem that the content of the oxidizing agent is insufficient due toevaporation of the oxidizing agent and insufficient dyeing is causedwhen the temperature is higher than the above range.

Hereinafter, preferred Examples and Comparative Examples of the presentinvention will be described.

The following Examples are illustrative of the present invention andshould not be construed as limiting the scope of the invention.

EXAMPLES 1 TO 11 AND COMPARATIVE EXAMPLE 1

The first agent and the second agent in the hair-dyeing compositionaccording to the present invention were produced by using the componentspresented in the following Table 1 (prescription for the production ofthe first agent) and Table 2 (prescription for the production of thesecond agent) and determining the order of addition.

Coffee extract, milk extract, and soybean extract used in the followingdescription are acquired by cold extraction, and the cold extraction maybe performed as follows, for example, in the case of a coffee extract.The Arabica coffee beans are immersed in purified water to be 100 g/L.Extraction is performed at 37° C. for 2 days by using a 5 L tank. Afterextraction, the extract is centrifuged to remove impurities. The coffeeextract is refluxed 3 times, each for 5 hours, by adding ethanol so asto finally obtain a 70% (v/v) aqueous ethanol solution, cold-settled,and then filtered through 3 μm, 1 μm, and 0.25 μm filter paper by usinga filtering device. When the filtration is completed, the extractobtained in the extraction step is transferred to the concentration tankand concentrated under reduced pressure or freeze-dried at 60° C. orlower. A mixed extract is produced by using purified water and abutylene glycol solvent so that the freeze-dried extract thus obtainedis contained at from 1.0 to 10% by weight.

Milk extract and the soybean extract are also produced by carrying outthe same and/or similar process as that for the coffee extract describedabove.

TABLE 1 Comparative Example Function Parts Example 1 1 2 3 4 5 Solvent WRemainder Remainder Remainder Remainder Remainder Remainder Sequesteringagent W 0.1 0.1 0.1 0.1 0.1 0.1 Antioxidant 1 W 0.2 0.2 0.2 0.2 0.2 0.2Antioxidant 2 W 0.5 0.5 0.5 0.5 0.5 0.5 Color developer 1 W 0.1 0.1 0.10.1 0.1 0.1 Color developer 2 W 0.05 0.05 0.05 0.05  0.05 0.05 Colordeveloper 3 W 0.015 0.015 0.015 0.015  0.015 0.015 Color developer 4 W0.05 0.05 0.05 0.05  0.05 0.05 Base material 1 0 8.0 8.0 8.0 8.0 8.0Base material 2 0 2.0 2.0 2.0 2.0 2.0 Base material 3 0 2.0 2.0 — 2.0Base material 4 0 4.0 4.0 — 4.0 Base material 5 0 6.0 — Base material 60 6.0 Base material 7 0 — 2.0 Base material 8 0 2.0 2.0 2.0 2.0 2.0 2.0Alkalizing W 9.0 9.0 9.0 9.0 9.0 9.0 agent 1 Alkalizing W 6.0 6.0 6.06.0 6.0 6.0 agent 2 Deodorant 0 0.1 0.1 0.1 0.1 0.1 Perfume 0 0.5 0.50.5 0.5 0.5 0.5 Protecting and W 2.0 2.0 2.0 2.0 2.0 alleviating agent 1Protecting and W 1.0 1.0 1.0 1.0 1.0 alleviating agent 2 Protecting andW 3.0 3.0 3.0 3.0 3.0 alleviating agent 3 Example Function 6 7 8 9 10 11Solvent Remainder Remainder Remainder Remainder Remainder RemainderSequestering agent 0.1 0.1 0.1 0.1 0.1 0.1 Antioxidant 1 0.2 0.2 0.2 0.20.2 0.2 Antioxidant 2 0.5 0.5 0.5 0.5 0.5 0.5 Color developer 1 0.1 0.10.1 0.1 0.1 0.1 Color developer 2 0.05 0.05 0.05 0.05 0.05 0.05 Colordeveloper 3 0.015 0.015 0.015 0.015 0.015 0.015 Color developer 4 0.050.05 0.05 0.05 0.05 0.05 Base material 1 8.0 8.0 8.0 8.0 8.0 8.0 Basematerial 2 2.0 2.0 2.0 2.0 2.0 2.0 Base material 3 4.0 2.0 2.0 2.0 2.02.0 Base material 4 2.0 4.0 4.0 4.0 4.0 4.0 Base material 5 Basematerial 6 Base material 7 Base material 8 2.0 2.0 2.0 2.0 2.0 2.0Alkalizing 9.0 9.0 9.0 (1) 9.0 (2) 9.0 (3) 9.0 (1) agent 1 Alkalizing6.0 6.0 6.0 (3) 6.0 (1) 6.0 (2) 6.0 (3) agent 2 Deodorant 0.1 (2) 0.1(3) 0.1 (1) 0.1 (2) Perfume 0.5 0.5 0.5 0.5 0.5 0.5 Protecting and 2.0alleviating agent 1 Protecting and 1.0 alleviating agent 2 Protectingand 3.0 alleviating agent 3 Legend: Unit: % by weight, W = Water phase,O = Oil phase Solvent = Purified water Sequestering agent: Disodium EDTAAntioxidant: 1 = Ascorbic acid, 2 = Sodium sulfite Color developer: 1 =Toluene-2,5-diamine sulfate, 2 = 2,4-Diaminophenoxyethanolhydrochloride, 3 = m-Aminophenol, 4 = Resorcinol Base material: 1 =Cetearyl alcohol, 2 = Behenyl alcohol, 3 = Polyoxyethylene octyl etherphosphate, 4 = Polyoxyethylene oleyl ether phosphate, 5 =Polyoxyethylene cetyl ether phosphate, 6 = Polyoxyethylene stearyl etherphosphate, 7 = Polyoxyethylene cetyl ether (surfactant), 8 = Mineral oilAlkalizing agent: 1 = Ammonia water (25%), 2 = MonoethanolamineDeodorant = L-menthol Perfume = Combined perfume Protecting andalleviating agent: 1 = Coffee extract , 2 = Milk extract, 3 = Soybeanextract The numbers in parentheses in the contents of alkalizing agentand deodorant in Examples 8 to 11 indicate the mixing order of thesecomponents

TABLE 2 Function Parts Example 1 Solvent (purified water) W RemainderSequestering agent (disodium EDTA) W pH adjusting agent (phosphoricacid) W pH adjusting agent (tetrasodium pyrophosphate) W Stabilizer(phenacetin) W Base material (polyoxyethylene oleyl ether W phosphate)Base material (cetearyl alcohol) W Oxidizing agent (hydrogen peroxidewater (35%) W Legend: Unit: % by weight, W = Water phase, O = Oil phaseThe second agent applies equally to all Examples of the first agent.

In other words, the same second agent is used in Examples 1 to 11 andComparative Example 1 of the first agent. Accordingly, only the firstagent is different and the second agent is the same in Examples 1 to 11of the present invention. Hence, Examples and Comparative Example arethus described by the numbers of Examples and Comparative Example of thefirst agent in the following description.

The production process of the first agent is as follows.

First, a color developer and a solvent among the respective componentspresented in Table 1 are put in a main tank and melted by being heatedat a temperature of 80° C. Separately, the oily components of a basematerial among the components constituting the first agent are melted bybeing heated to 80° C. and then put in the main tank, and the componentsare mixed together. Subsequently the mixture is stirred at 3500 rpm for25 minutes by using a homomixer for first emulsification. The emulsifiedmixture is cooled to 55° C., ammonia water of an alkalizing agent isadded thereto, and the mixture is stirred at 3500 rpm for 7 minutes byusing a homomixer for second emulsification. The cooled and emulsifiedmixture is cooled to 36° C. again, and a deodorant and monoethanolamineof an alkalizing agent are added thereto, and the mixture is stirred at3500 rpm for 7 minutes by using a homomixer for third emulsification.The mixture emulsified in the cooling step is again cooled to 27° C.,and a coffee extract, a milk extract, and a soybean extract which are ahair protecting and scalp irritation alleviating agent, an antioxidant,a sequestering agent, and a perfume are added thereto, and the mixtureis stirred at 3500 rpm for 3 minutes in the above temperature range forfourth emulsification.

The production process of the second agent is as follows.

First, the stabilizer and solvent components among the componentsconstituting the second agent in Table 2 are put in a main tank andmelted by being heated to a temperature of 80° C. Separately, thecomponents constituting the base material among the components of thesecond agent are melted by being heated to a temperature of 80° C. andthen put in the main tank, and the components are mixed together.Subsequently, the mixture is stirred at 3500 rpm for 7 minutes by usinga homomixer for emulsification. The emulsified mixture is cooled to 35°C., the sequestering agent, the pH adjusting agent, and the oxidizingagent are then added thereto, and the mixture is stirred at 3500 rpm for3 minutes for emulsification, thereby completing the operation.

EXPERIMENTAL EXAMPLE 1

The experiment on the stability of polyoxyethylene octyl ether phosphateand polyoxyethylene oleyl ether phosphate has been conducted. Theexperiment on the stability of the layered micelle structure ofpolyoxyethylene octyl ether phosphate and polyoxyethylene oleyl etherphosphate among the base materials has been conducted, and as a resultof test at 50° C. for 30 days, the most favorable stability is exhibitedin Example 7 containing polyoxyethylene octyl ether phosphate andpolyoxyethylene oleyl ether phosphate at a ratio of 1:2. From this, ithas been confirmed that the most stable layered micelle structure isformed when the ratio of polyoxyethylene octyl ether phosphate topolyoxyethylene oleyl ether phosphate is 1:2 (see FIGS. 4 and 5). InFIG. 4, which is a photograph of Example 1 according to the presentinvention, a transparent color portion is observed at the bottom. Thisindicates that the high temperature stability is relatively lower ascompared to FIG. 5, which is a photograph of Example 2, and a slightseparation phenomenon has occurred in Example 1.

Particularly, Example 1 exhibits a favorable effect of decreasingammonia odor as it forms a layered structure, but it is slightlyinferior in the long-term stability. Example 2 exhibits excellent effectof decreasing ammonia odor as it forms a layered structure and itexhibits excellent long-term stability as well. Examples 3 and 4 exhibitfavorable stability but do not exhibit a high effect of decreasingammonia odor as they have failed to form a stable layered structure.Example 5 exhibits favorable stability but the effect of decreasingammonia odor time dependently decreases as the layer structure formed bythe phosphate-based substances is collapsed by the influence of acompound (polyoxyethylene cetyl ether) capable of functioning as asurfactant.

EXPERIMENTAL EXAMPLE 2

The sensory evaluation of the deodorizing effect depending on the orderof addition of ammonia water, L-menthol, and monoethanolamine among thecomponents added was carried out. A questionnaire survey to examine theeffect of decreasing ammonia odor in the hair-dyes of Examples 8, 9, and10 has been conducted to 80 selected subjects in an age group of from 20to 50 years old. A general hair-dye of the present company is used asComparative Example 1. Specifically, the IMON HAIR COLOR CREAM 13 (astyling product turning to a greatly bright light golden color)manufactured by AreumDawoon Cosmetics Co., Ltd. is used. This productcontains ammonia water and monoethanolamine of an alkalizing agent at9.0% by weight and 6.0% by weight, respectively. The order of additionin this product system is simultaneous, and this product is an existingproduct having strong ammonia odor.

TABLE 3 Division Response Points (%) Remarks Comparative +++ 100 Sensorytest result after mixing Example 1 of first agent and second agentExample 8 −/+ 18 Example 9 + 35 Example 10 ++ 65

As presented in Table 3, the decrease rate is most favorable in Example8. This indicates that the raw material components are stably disposedin layers of the layered micelle structure according to the order ofaddition thereof so that ammonia water is positioned at the innermostpart of the micelle, L-menthol among the raw material components ispresent in the oil phase layer, and monoethanolamine is present in theoutermost water phase layer.

EXPERIMENTAL EXAMPLE 3

The effect of protecting the hair after hair-dyeing when coffee extract,milk extract, and soybean extract of a scalp protecting and irritationalleviating agent among the components added are added at a ratio of2:1:3 has been examined by taking a photograph. FIG. 6 illustrates thephotograph of Comparative Example 1, FIG. 8 illustrates the photographof Example 8, FIGS. 7 and 9 illustrate the photographs of Example 11.When FIG. 6 and FIG. 8 are compared to each other, it can be said thatthe cuticle damage can be slightly decreased as lifting of the haircuticle is less when a hair-dyeing composition has a layered micellestructure as compared to Comparative Example 1. FIGS. 7 and 9 illustratethe photographs of the hair-dyeing composition of Example 11, and aremarkable effect of protecting the hair cuticle has been observed.

EXPERIMENTAL EXAMPLE 4

The experiment to examine the scalp protecting effect (sensory test onerythema, pruritus, scalp trouble, burning sensation, and the like) hasbeen conducted by using the hair-dyeing composition of Example 11 andselecting the same panels as in Experimental Example 2, and the resultsare presented in the following Table 4.

TABLE 4 Scalp protecting Number of panels effect (persons) Superior 42None Excellent 28 Almost none Minor 8 Few

EXPERIMENTAL EXAMPLE 5

Comparative Example 1 and Examples 7, 8, and 11 have been produced, andthe hair-dyeing compositions are formed by mixing the first agent andthe second agent together and subjected to the dyeing experiment. Thedyeing fastness has been determined by immersing the dyed hair in anacidic solution and an alkaline solution which are similar to the sweatcomponents for 48 hours, and visually observing the degree ofdiscoloration, and recording the results. The acidic and alkalinesolutions similar to the sweat components have different pH values fromeach other and have been used to test the sweat fastness. The acidicsolution similar to the sweat components is a solution which containssodium chloride at 10 g/L, lactic acid at 1 g/L, and disodium phosphate(dodecahydrate) 2.5 g and has a pH of 4.5. The alkaline solution similarto the sweat components is a solution which contains sodium chloride at10 g/L, ammonium carbonate at 4 g/L, and disodium phosphate(dodecahydrate) 2.5 g and has a pH of 8.7.

TABLE 5 Comparative Example Division Example 1 Example 7 Example 8 11Remarks Dyeing Favorable Favorable Favorable Superior and fastness

As presented in Table 5 and FIG. 10, it has been confirmed that thehair-dyeing composition of Example 11 according to the present inventionexhibits remarkably superior dyeing property and dyeing fastness to theother compositions.

According to the present invention, it is possible to provide ahair-dyeing composition which is capable of decreasing ammonia odorgenerated during hair dyeing, especially during hair dyeing using anoxidative hair-dyeing composition, without enhancing or deterioratingthe dyeing power and at the same time decreasing damage of the hair andharmfulness to the human body of the hair-dyeing practitioner(hairdresser) and the customer and a method of producing the same.

While the present invention has been described with respect to thespecific embodiments, it will be apparent to those skilled in the artthat various changes and modifications may be made without departingfrom the spirit and scope of the invention as defined in the followingclaims.

What is claimed is:
 1. A hair-dyeing composition, comprising: a firstagent that comprises, based on total weight of the first agent: from 5to 30% by weight of a base material containing polyoxyethylene octylether phosphate and polyoxyethylene oleyl ether phosphate as essentialcomponents and additionally an auxiliary component selected from thegroup consisting of cetearyl alcohol, behenyl alcohol, mineral oil, andany mixture of two or more of these; from 5 to 25% by weight of analkalizing agent selected from the group consisting of monoethanolamine,ammonia water having an ammonia concentration of 28% by weight, and anymixture of these; from 0.01 to 2% by weight of a color developer; and aremainder that is a solvent; and a second agent that comprises, based ontotal weight of the second agent: from 1 to 10% by weight of a basematerial selected from the group consisting of polyoxyethylene oleylether phosphate, cetearyl alcohol, and any mixture of these; from 12 to20% by weight of an oxidizing agent; from 0.1 to 1% by weight of a pHadjusting agent; and a remainder that is a solvent.
 2. The hair-dyeingcomposition as claimed in claim 1, wherein the first agent furthercomprises from 0.01 to 0.5% by weight of a deodorant.
 3. The hair-dyeingcomposition as claimed in claim 2, wherein the deodorant is L-menthol.4. The hair-dyeing composition as claimed in claim 1, wherein the firstagent further comprises from 0.1 to 10% by weight of a hair protectingand scalp irritation alleviating agent selected from the groupconsisting of a coffee extract, a milk extract, a soybean extract, andany mixture of two or more thereof.
 5. The hair-dyeing composition asclaimed in claim 4, wherein the hair protecting and scalp irritationalleviating agent comprises a mixture of the coffee extract, the milkextract, and the soybean extract that has a mixing ratio by weight ofthe coffee extract: the milk extract: the soybean extract that is 2:1:3.